Witnessing User ID did:mcp:0x4ce421370cf0257d869618ec25c324ed4c6c7f65289297a3c134332c212e350b:substrate proving its ownership for Twitter account marvin_tong on https://social-linker-webapp.c..., challenge code is: 88b1f8b3274b8ee095e39706d9c28085.
见证用户ID did:mcp:0x4ce421370cf0257d869618ec25c324ed4c6c7f65289297a3c134332c212e350b:证明其对Twitter帐户marvin_tong的所有权https://social-linker-webapp.c...，挑战代码是：88b1f8b3274b8ee095e39706d9c28085。